"Recompute" (Grasshopper) Equivalent in Dynamo - When Run Doesn't Do It


In previous versions of Dynamo, I believe I could make a simple geometry, and then delete it from Revit, and hit “Run” and it would regenerate. Recently it seems to not let me regenerate the previous geometry unless the definition has been modified.

Any idea why or how to fix that?

Additionally, I can’t seem to get it to modify a geometry, instead of duplicating it.

For instance, I generate Line 1 that is 10’ long, then redesign/regenerate Line 1 at 100’ instead. Both the 10’ and 100’ instance exist. I want it to refresh the geometry, not create a new one.